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The Day and the Hour

Time is almost up!

“Three years ago, scientists gave us a pretty stark warning: They said we have 12 years to avoid the worst consequences of climate change,” John Kerry, former U.S. Senator (D‑Mass.) and Secretary of State and current US Special Climate Envoy, stated last week. 

“And now we have nine years left,” the 2004 Democratic presidential candidate added, “to try to do what science is telling us we need to do.”

Science speaks to Kerry. Just nine years, though? Not much time. 

But it could be worse. 

And apparently already is.

According to BBC environmental correspondent, Matt McGrath, who reported roughly 18 months ago that “there’s a growing consensus that the next 18 months will be critical in dealing with the global heating crisis.”

“The climate math is brutally clear,” Potsdam Climate Institute founder Hans Joachim Schellnhuber argued. “While the world can’t be healed within the next few years, it may be fatally wounded by negligence until 2020.”

“Healed”? Or brought to heel?

That time is running out “is becoming clearer all the time,” McGrath noted then, before quoting the eminent scientist, the Prince of Wales: “I am firmly of the view that the next 18 months will decide our ability to keep climate change to survivable levels and to restore nature to the equilibrium we need for our survival,” declared his royal highness, speaking at a reception more than 18 months back. 

Prince Charles Philip Arthur George Mountbatten-​Windsor is also considered something of an expert on receptions.

For my part, regarding these prophecies, I’m with Gavin Schmidt, the head of NASA’s Goddard Institute for Space Studies, who advised, “All the time-​limited frames are bullsh*t.”

I can follow that science.

This is Common Sense. I’m Paul Jacob.


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The Climate Cassandra

Thirty years ago, in June, 1986, the Senate Environment and Public Works Committee met to consider the problems of ozone depletion, the greenhouse effect, and climate change.

Present at those hearings was today’s climate Cassandra, James Hansen, then of the Goddard Institute of Space Studies. And he was predicting that “global temperatures should be nearly 2 degrees higher in 20 years,” according to Associated Press reporting at that time.

There was some sloppiness either in Hansen’s account, or the AP’s, for in one part of his testimony Hansen claimed that his institute’s climate models projected, for “the region of the United States, the warming 30 years from now is about 1 1/​2 degrees C, which is about 3 F.”

Ronald Bailey, the science writer over at Reason, tries to make sense of this mess of numbers, models, and predictions.

Oh, and actual, tabulated results.

Hansen’s predictions went, as Bailey put it, “definitively off the rails when tracking the temperature trend for the contiguous U.S. between 2000 and 2016. Since 2000, according to the NOAA calculator, the average temperature trend has been downward at ‑0.06 F degree per decade.”

That’s not the whole picture, though: “global temperatures have increased by 0.51 C degree since 1986, so perhaps the man-​made global warming signal has finally emerged.”

No matter, though, as Bailey notes, “the United States and the Earth have warmed at considerably slower pace than Hansen predicted 30 years ago.”

Which suggests that Hansen’s models may be inspired more by wish, fear, and ideology than genuine science.

So, to those who wish to rush to “do something” (anything?) to combat “climate change,” take it slow. Follow the pace of the Earth itself.

This is Common Sense. I’m Paul Jacob.


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